42774310637 has 2 divisors, whose sum is σ = 42774310638. Its totient is φ = 42774310636.

The previous prime is 42774310619. The next prime is 42774310669. The reversal of 42774310637 is 73601347724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35574109321 + 7200201316 = 188611^2 + 84854^2 .

It is a cyclic number.

It is not a de Polignac number, because 42774310637 - 2¹² = 42774306541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42774010637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387155318 + 21387155319.

It is an arithmetic number, because the mean of its divisors is an integer number (21387155319).

Almost surely, 2^42774310637 is an apocalyptic number.

It is an amenable number.

42774310637 is a deficient number, since it is larger than the sum of its proper divisors (1).

42774310637 is an equidigital number, since it uses as much as digits as its factorization.

42774310637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 44.

The spelling of 42774310637 in words is "forty-two billion, seven hundred seventy-four million, three hundred ten thousand, six hundred thirty-seven".